<?php
/**
 * Created by PhpStorm.
 * User: 刚
 * Date: 2017/7/31
 * Time: 18:34
 */
include_once('BookPrototype.php');

class PHPBookPrototype extends BookPrototype
{
    function __construct()
    {
        $this->topic = 'PHP';
    }

    function __clone()
    {
        // TODO: Implement __clone() method.
    }
}